<template>
  <div class="login_cantainer">
    <div class="login_box">
      <!-- 头像 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录 -->
      <el-form ref="form_login" label-width="0" :model="login_form" :rules="login_rules" class="login_form">
        <el-form-item prop="username">
          <el-input prefix-icon="el-icon-user-solid" v-model="login_form.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input prefix-icon="iconfont icon-A" v-model="login_form.password" type="password"></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="formReset">重置</el-button>
        </el-form-item> 
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: "login",
  data() {
      return {
        //   登入数据
          login_form:{
              username:"admin",
              password:"123456",
          },
        //   登入表单验证
          login_rules:{
            username: [
                { required: true, message: '请输入帐号', trigger: 'blur' },
                { min: 3, max: 11, message: '长度在 3 到 11 个字符', trigger: 'blur' }
            ],
            password: [
                { required: true, message: '请输入密码', trigger: 'blur' },
                { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
            ]
          }
      }
  },
  methods:{
    //   点击重置登录数据
    formReset(){
          this.$refs.form_login.resetFields()
      },
    login(){
          this.$refs.form_login.validate(async(valid) => {
              if(!valid) return
              const {data:res} = await this.$http.post("login",this.login_form)
              if(res.meta.status == 200){
                  this.$message.success('登录成功');
                //登陆成功后 后台返回token 保存token 怎么保存呢？ 通过 sessionStorage 保存在本地
                window.sessionStorage.setItem("token",res.data.token) 
                // 之后要发生页面的跳转 页面跳转通过什么跳转呢？ 通过编程式导航跳转
                this.$router.push("/home")
              }else{
                  this.$message.error('登录失败');
              }  
          })
      }
  }
};
</script>

<style lang="less" scoped>
.login_cantainer {
  background-color: #2b4b6b;
  height: 100%;
  .login_box {
    width: 450px;
    height: 300px;
    background-color: white;
    border-radius: 10px;

    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    .avatar_box {
      height: 130px;
      width: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #fff;
      img {
        height: 100%;
        width: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }
  }
}

.btns{
    display: flex;
    justify-content: flex-end;
}
.login_form{
    position: absolute;
    bottom:0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}
</style> 